Liking more than one gender is greedy?

A lot of hetro/homo people claim that to be bi/pan/ect is greedy and we are just confused. Now I just don't understand this.

1) we aren't greedy cause of our sexuality. We still date one person at a time, if there is someone who is bi dating more than one people, that's down to a different situation (open relationships and poly-).

2) If you're a gay person claiming we are greedy or confused, shouldn't you understand more? After all, you too must claim that we are born with out sexuality and it's just love. So don't you think that's a bit hypocritical to say that for yourself but then not for us, claiming it's just a little "thing"

3) seriously, what is so unbelievable about it all? It's simply liking all/two genders. It's not so obscure that its hard to believe. It's not some odd and rlly specific sexualities, it's so simple yet people still don't believe it's a thing.

4) you think we'll cheat more? What in your right mind makes you think that?! We are still people. If we don't have a history of cheating, we are just as reliable as the next person. Being attracted to more than one gender doesn't mean we'll be attracted to more than one at the same time. That too is a different thing- POLY. Literally our sexuality does not define us to the nth degree. Judge our character to see if we're liable to cheat not our sexuality. The sexuality just means I could be attracted to you, whatever your gender.

Sorry had to rant. This just annoys me, people rlly don't use logic.

Byeee xx